Home / 855,479,948.70-1,283,219,923.05-310,239,270.30

Finding the Fourth Proportional to 855,479,948.70, 1,283,219,923.05 and 310,239,270.30

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Solution

The fourth proportional to 855,479,948.70, 1,283,219,923.05 and 310,239,270.30 is: 465,358,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,479,948.70 : 1,283,219,923.05 = 310,239,270.30 : x
  2. Step 2: Convert to fraction form
    855,479,948.70/1,283,219,923.05 = 310,239,270.30/x
  3. Step 3: Cross multiply
    855,479,948.70x = 1,283,219,923.05 × 310,239,270.30
  4. Step 4: Simplify right side
    855,479,948.70x = 398,105,212,561,454,144
  5. Step 5: Solve for x
    x = 398,105,212,561,454,144/855,479,948.70
  6. Step 6: Final answer
    x = 465,358,905.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.